Modeling Temperature Effects on Decomposition
Publication: Journal of Environmental Engineering
Volume 129, Issue 12
Abstract
Temperature strongly affects carbon decomposition making it difficult to apply decay rates determined in one environment to another. After considering a number of approaches, this study recommends modeling decay by using the Arrhenius equation to adjust time. The resulting decay constants are independent of temperature and can therefore be applied to similar materials in other climates. To test the method, parameters developed from a mesophilic mulch decomposition study are applied to a thermophilic compost experiment. A two compartment linear model is used and cases are considered where values for labile and recalcitrant compartments are uniform and where they differ. In the uniform case, is found to be reasonable. Where different values are allowed, it is found that for the labile fraction and for recalcitrant materials suggesting that labile and recalcitrant materials may respond differently to temperature gradients.
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Information
Published In
Journal of Environmental Engineering
Volume 129 • Issue 12 • December 2003
Pages: 1149 - 1156
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jul 10, 2002
Accepted: Dec 4, 2002
Published online: Nov 14, 2003
Published in print: Dec 2003
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